Steam locomotive



Sept. 414 1926.

M. PEKICH STEAM LoooMoTIvE Filed May 22, 1925A .lllln En Q Patented Sept. 14, 1926.

"UNITED '"ST-ATES LaminaA EKICH, A0]? PITTSBURGH, PENNSYLVANIA.

STEAM *LoooMo'rrvn Application f11ed May 22, 1925. Serial V1\1' .2 2,048.

My invention relates to improvements in steam locomotives, and particularly to means for reducing the noise and smoke incident to thev operation thereof. v

My invention has for one of its objects the provision of means whereby the exhaust from vthe locomotive cylinders is muffled or so controlled that it will be less audible than in the Vform of locomotives heretofore employed. l Y n n VAnother object of my invention isto provide means. -for reducing the amount of smoke' which issuesfrom the stack of a locomotive when fired. f c

Still another object of my invention is to simplifyl and improve generally the structure and operation of locomotives.

One form which my invention may take is shown in t-he accompanying drawing,

' wherein Fig. 1 is a sectional view, in side elevatiomof a locomotive embodying my invention, Fig. 2 is aview Vtaken on the line 2--2 of Fig. 1, and Fig. 3 is a crosssectional view of a portion of the front end of the locomotive.

It will be understood 'that my invention may be used in connection with other steam plants than those of the locomotive type, it being shown in connection with a locomotive for convenience of description. A

I have shown a locomotive which is provided with a. boiler 10 and a ire box 11 which has a coal grate 12. Two door openings, 13 and 14, are provided for the introduction of coke and coal respectively. The openings 13 and 14 are divided by a watercooled connecting bar 15. A single door may be provided for both openings 13 and 14 or separate doors may be provided therefor.

Abo-ve the grate bars 12 I provide a grate 16 which consists of water tubes that are connected to the water spaces in the boiler, in the usual manner, such as by tubes 17 at their front ends and by tubes 18 at their rear ends. Fire bricks 19 are placed upon the tubes 17 so that the smoke and gas from the burning coal will have to pass between the tubes 16 that serve as a grate for the coke. A series of tubes 2O is disposed above the coke grate 16 and communicates with thewater spaces of the boiler through tubes 21 at one end, and'through tubes 22 whichmay have connection with the tubes 17. Bricks 23 surround the tubes 22 to prevent passage of smoke and gas and to protect the same from the heat, while bricks 24 form an arch which deflects the productsof combustion rearwardly, .in order that the smoke and ygas will be more effectively consumed and a greater amount of heat absorbed.

An opening 25 is provided in the 'iside of the fire-box, Y which may be covered by a plate, if desired. When itis desiredto clean the locomotive 'and particularly the grate 16, a bar may be inserted through the opening 25 to raise the bricks 19 so that the unburned coke on gratef16 may be pushed between the tubes 17 and fall into the bottom of the ire-box. An opening 26 may also be provided to serve as a peep-hole for detecting leaky tubes and inspecting con-ditions in the interior of the tire-box.

The locomotive is provided with the usual front end orvsmoke box 28 and Stack 29. An exhaustypipe 30 leading from the cylinders is directed upwardly toward the stack in the usual manner, but instead of exhausting di? rectly through the stack, with the consequent noise incident to such procedure, especially when the locomotive is operated under heavy load, IL direct such exhaust rearwardly to the fire-box, and for this purpose provide a pipe connection 31 at the entrance to which Va valve 32 is placed. The valve 32 may be operated from the exterior of the locomotive by a rock shaft 33 which extends through A the side wall of the front end 28. It will be apparent that operation of the valve 33 will determine whether the exhaust will be conducted directly through the stack or deiiected through the pipe 31. The pipe 31 has connection with a fire tube 34.

Applying the invention to locomotives equipped with superheater tubes as indicated at 35, I preferably remove one of the superheater'tubes 35 and connect up the exhaust conduit 31 to the fire tube from which a superheater tube has been removed. If one fire tube does not have suiicient capacity I may direct the exhaust steam through a plurality of ire tubes. At its rear end, the fire tube 34 may have threaded connection with a tubular plug 36, such plug beingprovided with a flange 37 that may be bolted t0 a flange 3 8 which is carried by a manifold 39. The manifold 39 is providedwith Ia series of ,nozzle openings 40 that are in alignment with as many of the fue tubes as may be desired. The superheater tubes have connection with the steam dome and the cylinders, in the usual manner. Y

In addition to directing the cylinder exhaust into the fire ybox I may also cause the be scarcely audi-ble to those in the vicinity of the railroad tracks.

In addition to performing the function of a muffler., myfdevifce will assist in reducing the discharge of smoke fand cin-ders vfrom the -locemOtiVestaGk, since the y'eoinniingling of the ste-ainaand Vfsniolnat the entrance to the fire tubes #will l.result-in -much ofthe soli-d matter bein-g lprecipitated in the front end 'of the boil-1er fromvW-hi'ch it can be removed in the usual manner.

Direction of 'the steam to -a-point adjacent tothe exitofthefire box avoids unnecessary cooling of the 'fire box, and particularly -of the 'arch 24, thus permitting more com-plete cembustionoffthe smoke and gas, than if the steam `Were admitted .at aloWer rpoint in Jthe fire box.

1f desired, the exhaust steam from the air rcem-presser (not shown) may also be directed 'rearwardly Ythrough the tube Y34, such exhaust steam being indicated Jon Athe drawing as connected 'to the pipe 30 by a pipe 43. IInasmuch las the -Lexhaust steam from the lcompressor may flow to the "rear ends of the iire tubes While the locomotive is at rest, such steam will prevent excessiveV heating Yand burning` out of the manifold 39 and its nozzles, since there is no Wat-er surrounding this manifold as in the case of the fire tubes.

I claim as inyinyention l. The combination with a steam locomotive having a "rebex, fire tubes, and` a smoke box, of an exhaust pipe within the smoke box, acond-uit leadingr from saidfpipe yto the front end ofoneof said tubes, ra manifold disposed in thefiire-box and connected to the rear-endef said tube, and forWa-rdlydirected nozzles on `said manifold, in longitudinal a'linemfen-t with eertain other y'lire tubes.

52. The combination Awith a steam lo'oemo tive having a lire-box, fire tubes, a smekebox, and a compressor, ef an exhaust `pipe `vin the sinolebox for conducting .steam from tthe locomotive cylinders and thefconipressor, a conduit leading from said V'ite the `lfront end of one of lsaid -tu`be's,`fa manifold disposed in the 'fire VIe'ox Aand.'connected Yto the rear end of said tube,- and forward-ly directed Vnozzles fon said finanifold, ink longitudinal a'linenient with certain other lire Vtube's,-the exhaust from the compressor `serving te keep the manifold cool When no 1exhaust steam isV passing` froinrthe cylinders. ,y Y Y In testimony whereof I-,Y-the said YMICHAEL PEKI'GH have hereunto set my hand.

MICHAEL PEKI'CH. 

